mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Iron Oxide

Hardness: 6.5-7 on Mohs scale; Color: Deep forest green with red spots/streaks; Luster: Vitreous to waxy; Crystal structure: Hexagonal (Microcrystalline); Cleavage: None; Specific gravity: 2.6-2.7

Hardness: 6
Color: Deep forest green with red spots/streaks
Luster: Vitreous to waxy

Identified March 28, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Deep forest green with red spots/streaks; Luster: Vitreous to waxy; Crystal structure: Hexagonal (Microcrystalline); Cleavage: None; Specific gravity: 2.6-2.7

Formation & geological history

Formed at low temperatures through the precipitation of silica from groundwater in the fractures and cavities of other rocks. It is found in hydrothermal veins and as pebbles in riverbeds.

Uses & applications

Primarily used in jewelry (cabochons, beads), decorative carvings, and as a popular stone for gem collectors and metaphysical practitioners.

Geological facts

Also known as Heliotrope, which comes from Greek words meaning 'to turn the sun.' In the Middle Ages, the red spots were believed to be the blood of Christ, giving it great religious significance.

Field identification & locations

Identify by its opaque dark green body and characteristic red jasper inclusions. Commonly found in India, Brazil, Australia, and the USA (California). Collectors look for high contrast between the green base and vibrant red spots.

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